Dewetting of thin polymer films |
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Authors: | T Vilmin E Raphaël |
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Institution: | (1) Laboratoire de Physico-Chimie Théorique, UMR CNRS 7083, ESPCI, 10 rue Vauquelin, 75231 Paris Cedex 05, France |
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Abstract: | We study the dewetting of thin polymer films deposited on slippery substrate. Recent experiments on these systems have revealed
many unexpected features. We develop here a model that takes into account the rheological properties of polymer melts, focussing
on two dewetting geometries (the receding of a straight edge, and the opening of a hole). We show that the friction law associated
with the slippage between the film and the substrate has a direct influence on the dewetting dynamic. In addition, we demonstrate
that residual stresses, which can be stored in the films due to their viscoelasticity, are a source of destabilization for
polymer films, and accelerate the dewetting process. |
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Keywords: | 68 60 -p Physical properties of thin films nonelectronic 68 15 +e Liquid thin films 68 55 -a Thin film structure and morphology 83 10 -y Fundamentals and theoretical |
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